diff options
Diffstat (limited to 'target/linux/au1000/patches/016-watchdog_pdev_gpio.patch')
| -rw-r--r-- | target/linux/au1000/patches/016-watchdog_pdev_gpio.patch | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/target/linux/au1000/patches/016-watchdog_pdev_gpio.patch b/target/linux/au1000/patches/016-watchdog_pdev_gpio.patch new file mode 100644 index 0000000..ea162f1 --- /dev/null +++ b/target/linux/au1000/patches/016-watchdog_pdev_gpio.patch @@ -0,0 +1,104 @@ +diff --git a/drivers/char/watchdog/mtx-1_wdt.c b/drivers/char/watchdog/mtx-1_wdt.c +index dcfd401..5d8c51f 100644 +--- a/drivers/char/watchdog/mtx-1_wdt.c ++++ b/drivers/char/watchdog/mtx-1_wdt.c +@@ -45,10 +45,13 @@ + #include <linux/completion.h> + #include <linux/jiffies.h> + #include <linux/watchdog.h> ++#include <linux/platform_device.h> ++ + #include <asm/io.h> + #include <asm/uaccess.h> + + #include <asm/mach-au1x00/au1000.h> ++#include <asm/gpio.h> + + #define MTX1_WDT_INTERVAL (5 * HZ) + +@@ -61,6 +64,7 @@ static struct { + volatile int queue; + int default_ticks; + unsigned long inuse; ++ unsigned gpio; + } mtx1_wdt_device; + + static void mtx1_wdt_trigger(unsigned long unused) +@@ -73,7 +77,7 @@ static void mtx1_wdt_trigger(unsigned long unused) + * toggle GPIO2_15 + */ + tmp = au_readl(GPIO2_DIR); +- tmp = (tmp & ~(1<<15)) | ((~tmp) & (1<<15)); ++ tmp = (tmp & ~(1<< mtx1_wdt_device.gpio)) | ((~tmp) & (1<< mtx1_wdt_device.gpio)); + au_writel (tmp, GPIO2_DIR); + + if (mtx1_wdt_device.queue && ticks) +@@ -93,7 +97,7 @@ static void mtx1_wdt_start(void) + { + if (!mtx1_wdt_device.queue) { + mtx1_wdt_device.queue = 1; +- au_writel (au_readl(GPIO2_DIR) | (u32)(1<<15), GPIO2_DIR); ++ gpio_set_value(mtx1_wdt_device.gpio, 1); + mod_timer(&mtx1_wdt_device.timer, jiffies + MTX1_WDT_INTERVAL); + } + mtx1_wdt_device.running++; +@@ -103,7 +107,7 @@ static int mtx1_wdt_stop(void) + { + if (mtx1_wdt_device.queue) { + mtx1_wdt_device.queue = 0; +- au_writel (au_readl(GPIO2_DIR) & ~((u32)(1<<15)), GPIO2_DIR); ++ gpio_set_value(mtx1_wdt_device.gpio, 0); + } + + ticks = mtx1_wdt_device.default_ticks; +@@ -197,10 +201,12 @@ static struct miscdevice mtx1_wdt_misc = { + }; + + +-static int __init mtx1_wdt_init(void) ++static int mtx1_wdt_probe(struct platform_device *pdev) + { + int ret; + ++ mtx1_wdt_device.gpio = pdev->resource[0].start; ++ + if ((ret = misc_register(&mtx1_wdt_misc)) < 0) { + printk(KERN_ERR " mtx-1_wdt : failed to register\n"); + return ret; +@@ -222,13 +228,30 @@ static int __init mtx1_wdt_init(void) + return 0; + } + +-static void __exit mtx1_wdt_exit(void) ++static int mtx1_wdt_remove(struct platform_device *pdev) + { + if (mtx1_wdt_device.queue) { + mtx1_wdt_device.queue = 0; + wait_for_completion(&mtx1_wdt_device.stop); + } + misc_deregister(&mtx1_wdt_misc); ++ return 0; ++} ++ ++static struct platform_driver mtx1_wdt = { ++ .probe = mtx1_wdt_probe, ++ .remove = mtx1_wdt_remove, ++ .driver.name = "mtx1-wdt", ++}; ++ ++static int __init mtx1_wdt_init(void) ++{ ++ return platform_driver_register(&mtx1_wdt); ++} ++ ++static void __exit mtx1_wdt_exit(void) ++{ ++ platform_driver_unregister(&mtx1_wdt); + } + + module_init(mtx1_wdt_init); +@@ -237,3 +260,4 @@ module_exit(mtx1_wdt_exit); + MODULE_AUTHOR("Michael Stickel, Florian Fainelli"); + MODULE_DESCRIPTION("Driver for the MTX-1 watchdog"); + MODULE_LICENSE("GPL"); ++MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR); |